RPM limiter on FOX body.

CBZGT50

New Member

Apr 21, 2005

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St Louis area

Aug 11, 2005

#1

• Aug 11, 2005

• #1

I have a nice 93 Cobra that I just aquired. I also have a 95 Cobra Coupe. In the 95 I can get it up to 6000+ before the rev limiter kicks in, but in the 93 it bounces at 5000-5200. The tach colors are bearly in the yellow before the revs bounce. Is this correct for the Cobra fox body? Do I need to get a power commander of some sort to up the rev limiter? Any help would be great.

 

kck6894

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Mar 18, 2004

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Paradise

Aug 11, 2005

#2

• Aug 11, 2005

• #2

CBZGT50 said:

I have a nice 93 Cobra that I just aquired. I also have a 95 Cobra Coupe. In the 95 I can get it up to 6000+ before the rev limiter kicks in, but in the 93 it bounces at 5000-5200. The tach colors are bearly in the yellow before the revs bounce. Is this correct for the Cobra fox body? Do I need to get a power commander of some sort to up the rev limiter? Any help would be great.

Click to expand...

I am not 100% sure but I thought all the limiters were close to the same place at around 6200.

You might ck and see if it's an ignition problem. Could just be a bad set of spark plug wires.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

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Aug 11, 2005

#3

• Aug 11, 2005

• #3

The tach probably is leaving something to be desired.

As for the SN95 redline, seems to me that Paul and others have reported a true (per logging) 7K RPM limiter. I have no info to confirm that.

Stock fox puter does limit at 6250, but I dont know if the cobra puter has a slightly higher limiter.

Are you not running out of lung at 6000 RPM anyhow?

Good luck.

 

darthcual

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Mar 31, 2005

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Arlington, TX

Aug 11, 2005

#4

• Aug 11, 2005

• #4

I agree with hissin, what is the seat of ur pants telling you that way you know if its the guage or another problem.

 

CBZGT50

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Apr 21, 2005

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St Louis area

Aug 11, 2005

#5

• Aug 11, 2005

• #5

The 93 just doesn't run as hard in the top end because right where the serious power band is, the limiter bumps it. Maybe I am just not used to driving a fox. I have had two SN95's. One a Cobra (still have) and the other a 95 vert.

BTW the 93 is clean and perfect. Maybe the clutch is different to me and it just revs faster than the SN-95 with a king cobra clutch vs. the stock ford disk and plate. I was just asking incase anybody knew.

 

K

Kerpal

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Aug 9, 2004

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Aug 12, 2005

#6

• Aug 12, 2005

• #6

I'm kind of thinking possible ignition problem as well, when was the last time the car had a full tune up?

When I first bought my car it would die out at 5000-5500 rpm. Felt like a rev limiter kicking in, but in my case the ignition components were original so it was obvious that was the problem.

 

TenorPlayinGuy

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Aug 3, 2001

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Canyon Country, Ca

Aug 12, 2005

#7

• Aug 12, 2005

• #7

yup.... just cuz the limiter is that high dont mean you can actualy HIT that high. I have issues getting above 5400 but I know for fact its my fuel pump... poor little thing... gonna bite the bullet soon

 

QDRHRSE

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Dec 31, 2002

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Palmdale, CA

Aug 12, 2005

#8

• Aug 12, 2005

• #8

Stock tachs are crapolla. Either get a shift light or an aftermarket tach.

 

T

tjm73

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Aug 3, 2000

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Rush, NY

Aug 12, 2005

#9

• Aug 12, 2005

• #9

All 5.0 H.O. EFI engines are limited to 6250rpm.

I've seen over 7000 rpm on my '90 Mustang GT. Like someone else said the stock tach is crap.